On Sat, 20 Nov 2004 00:20:10 -0800, Spike > wrote:

>As I recall,according to a study, all it takes is the eruption of
>three major volcanos, which is far from uncommon, to produce more
>ozone depleting gases and pollutants, than the human race presently
>produces.

Most emission of volcanic and methane gasses comes from under
the ocean. In fact, they are talking about mining supercooled
methane sources as a fuel under the oceans because they believe
the quantities are enormous.